@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #0a0e14;
  --surface: #0f141c;
  --surface-raised: #161c26;
  --surface-hover: #1c2330;
  --border: #232a37;
  --border-soft: #1a212c;
  --text: #e8ecf1;
  --text-dim: #8a94a6;
  --text-faint: #5b6577;

  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, 0.12);
  --accent-border: rgba(91, 140, 255, 0.35);
  --accent-ink: #06101f;

  --danger: #f2555f;
  --danger-soft: rgba(242, 85, 95, 0.12);
  --danger-border: rgba(242, 85, 95, 0.35);

  --warning: #f0a83d;
  --warning-soft: rgba(240, 168, 61, 0.12);

  --success: #3ecf8e;
  --success-soft: rgba(62, 207, 142, 0.12);

  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow-lg: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 10px 30px -12px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

button {
  font-family: var(--sans);
  cursor: pointer;
}

::selection { background: var(--accent-soft); color: var(--text); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 20px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }

/* ---------- Login ---------- */

.login-screen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.login-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px circle at 18% 15%, rgba(91, 140, 255, 0.10), transparent 55%),
    radial-gradient(500px circle at 85% 85%, rgba(62, 207, 142, 0.06), transparent 55%);
  pointer-events: none;
}

.login-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(700px circle at 50% 45%, black, transparent);
  pointer-events: none;
}

.login-box {
  position: relative;
  width: 380px;
  background: linear-gradient(180deg, var(--surface-raised), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px 30px;
  box-shadow: var(--shadow-lg);
}

.login-glyph {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.login-box h1 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: -0.2px;
}

.login-box h1 .brand-accent { color: var(--accent); font-weight: 500; }

.login-sub {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0 0 22px;
  line-height: 1.5;
}

.login-box label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  margin: 14px 0 6px;
}

.login-box input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--sans);
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login-box input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.login-box button[type="submit"] {
  width: 100%;
  margin-top: 24px;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px;
  font-weight: 600;
  font-size: 14px;
  transition: filter 0.15s ease, transform 0.05s ease;
}

.login-box button[type="submit"]:hover { filter: brightness(1.08); }
.login-box button[type="submit"]:active { transform: translateY(1px); }

.error-text {
  color: var(--danger);
  font-size: 12.5px;
  margin-top: 12px;
  min-height: 14px;
}

/* ---------- App shell ---------- */

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 56px;
  flex: none;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.brand { font-weight: 700; letter-spacing: -0.2px; font-size: 14.5px; display: flex; align-items: center; gap: 9px; }

.brand::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  flex: none;
}

.brand-accent { color: var(--text-dim); font-weight: 500; }

.pulse {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  background: var(--surface-raised);
}

.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.whoami {
  color: var(--text-dim);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.whoami::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.layout {
  flex: 1;
  display: flex;
  min-height: 0;
}

/* ---------- Sidebar ---------- */

.sidebar {
  width: 288px;
  flex: none;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
}

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 10px;
  color: var(--text-faint);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
}

.ns-tree {
  flex: 1;
  overflow-y: auto;
  padding: 0 10px 10px;
}

.ns-group-title {
  color: var(--text-faint);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.6px;
  padding: 14px 8px 6px;
}

.ns-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border: 1px solid transparent;
  transition: background 0.12s ease;
}

.ns-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-faint);
  flex: none;
}

.ns-item:hover { background: var(--surface-hover); }
.ns-item.active {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}
.ns-item.active::before { background: var(--accent); }

.ns-item .lock { margin-left: auto; font-size: 12px; opacity: 0.75; }

.sidebar-foot { padding: 12px; border-top: 1px solid var(--border); }

/* ---------- Main ---------- */

.main {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  padding: 26px 32px 40px;
}

.empty-state {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  gap: 10px;
  text-align: center;
}

.empty-glyph {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  color: var(--text-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 6px;
}

.empty-state p { margin: 0; font-size: 13.5px; max-width: 300px; line-height: 1.6; }

.ns-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.ns-header h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  font-family: var(--mono);
}

.ns-header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: var(--surface-raised);
}

.badge.protected { color: var(--warning); border-color: rgba(240, 168, 61, 0.35); background: var(--warning-soft); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-md);
}

.panel h3 {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.tbl th {
  text-align: left;
  color: var(--text-faint);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.tbl td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: middle;
}

.tbl tbody tr:hover { background: var(--surface-raised); }

.tbl tr:last-child td { border-bottom: none; }

.mono-dim { color: var(--text-dim); font-family: var(--mono); font-size: 12.5px; }

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 7px;
  box-shadow: 0 0 0 3px transparent;
}

.status-dot.up { background: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }
.status-dot.down { background: var(--text-faint); }
.status-dot.warn { background: var(--warning); box-shadow: 0 0 0 3px var(--warning-soft); }
.status-dot.err { background: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* ---------- Buttons ---------- */

.btn {
  background: var(--surface-raised);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 12.5px;
  font-weight: 500;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}
.btn:hover { border-color: var(--accent-border); color: var(--accent); background: var(--accent-soft); }

.btn-ghost { background: transparent; }

.btn-block { width: 100%; }

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
  font-weight: 600;
}
.btn-danger:hover { filter: brightness(1.1); color: #fff; background: var(--danger); }

.btn-danger-ghost {
  background: transparent;
  border-color: var(--danger-border);
  color: var(--danger);
}
.btn-danger-ghost:hover { background: var(--danger-soft); color: var(--danger); }

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  width: 24px;
  height: 24px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.btn-icon:hover { color: var(--accent); border-color: var(--accent-border); background: var(--accent-soft); }

input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  padding: 6px 8px;
  font-size: 12.5px;
}
input[type="number"]:focus { outline: none; border-color: var(--accent); }

/* ---------- Modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 12, 0.72);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal {
  width: 440px;
  max-width: 90vw;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-lg);
}

.modal-wide { width: 760px; }

.modal h3 { margin: 0 0 14px; font-size: 15px; font-weight: 700; letter-spacing: -0.2px; }

.modal input, .modal textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 11px;
  font-family: var(--mono);
  font-size: 13px;
  margin-top: 10px;
}

.modal input:focus, .modal textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.modal textarea { min-height: 220px; resize: vertical; }

.modal p { font-size: 13px; color: var(--text-dim); line-height: 1.6; margin: 0; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

.log-body {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  max-height: 50vh;
  overflow: auto;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-raised);
  border: 1px solid var(--accent-border);
  color: var(--text);
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  z-index: 60;
  box-shadow: var(--shadow-lg);
}

.toast.err { border-color: var(--danger-border); color: var(--danger); }

@media (max-width: 780px) {
  .sidebar { width: 230px; }
  .main { padding: 18px; }
  .ns-header h2 { font-size: 17px; }
}